According to information taken from the International Genealogy Index (I.G.I.), Jenefer Jewell was baptised on the 10th February 1821, in the Parish of St Ithians, Cornwall. Jenefer was the sixth child of Richard Jewell and Elizabeth Phillips.
A further search of the I.G.I, shows only 1 record of a Jenefer Jewell being married. The information shows that a Jenefer Jewell married James Rodda, on the 13th August 1836, in the Parish of Wendron. Interestingly Wendron is next door to St Ithians. A subsequent search of the I.G.I., has discovered a number of baptisimal records for James Rodda, and as such I can not be 100% certain where he was born, or who his parents were.
Unfortuntely I could not find any record whether Jenefer and James had any children, or what became of them. They could have moved to another County, or even migrated overseas. If anyone has anymore information about Jenefer and James, or you feel you may be one of their descendants, please contact me at firstname.lastname@example.org